You're asking if the notes mention that adjectives agree with their gender? Yes, in the notes for the chapter on each of the four genders it says "Every noun of High Valyrian belongs to one of these four genders and requires its adjectives to agree with that gender."
If you think about it, it is meaningless for a noun to have grammatical gender, unless other words in the sentence (typically adjectives) have to "agree."
What are the different endings for "My"? Would this be correct?
- Nominative: Ñuha (singular), Ñuhi (plural).
- Accusative: Ñuhe (singular), Ñuhii (plural).
- Nominative: Ñuhys/z (singular), Ñuhys/z (plural) - (if this is put before a noun that starts with "k", "p", "s", or "t", this will end with an s. Otherwise it ends with an s.
- Accusative: Ñuhi (singular), Ñuhyii (plural).
This should be correct I think?